CVE-2026-31431

CVE-2026-31431 構造 root@kitploit: . ├── container │ ├── container.md コンテナエスケープの考え方 │ ├── expenv コンテナ環境 │ │ ├── bin │ │ │ ├── gscontainer │ │ │ └── share │ │ ├── Dockerfile │ │ ├── run.sh │ │ └── src │ │ ├── gscontainer.c │ │ └── share.c │ ├── images │ │ ├── container.png │ │ ├── getshell.png │ │ ├...

XCP_ng_CVE-2026-43284_tester

XCP-ng Dirty Frag 诊断工具 — CVE-2026-43284 一个社区诊断工具，用于判断 XCP-ng dom0 主机是否暴露于 CVE-2026-43284 （“Dirty Frag”），这是 Linux 内核 xfrm-ESP 子系统中的一个本地权限提升漏洞。 TL;DR — 所有当前 XCP-ng 版本（8.1、8.2、8.3）运行标准 4.19 dom0 内核的都在受影响代码范围内。截至 2026 年 5 月，官方尚未发布 XCP-ng 补丁。本工具能明确告知您的主机是否暴露，并提供安全的临时缓解措施。 背景 “Dirty Frag”...

DirtyFrag-go

dirtyfrag-go 两个漏洞。一个 Shell。零磁盘写入。 dirtyfrag（CVE-2026-43284 / CVE-2026-43500）的 Go 移植版。 工作原理（简述） 这类漏洞位于 Linux 内核的 XFRM 子系统。当文件页被 splice 送入管道，再送入 ESP 加密的套接字时，内核会在原地解密 ESP 载荷——直接写入源文件的页缓存页。文件是只读的，但页缓存不是。 dirtyfrag 利用这一原语串联了两个独立的漏洞： CVE-2026-43284 - ESP/XFRM 路径 通过 NETLINKXFRM 安装 48 条 XFRM 传输模式 SA。每条 S...

A flaw was found in the Linux kernel's XFRM ESP-in-TCP subsystem

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: preserve shared-frag marker during coalescing skbtrycoalesce can attach paged frags from @from to @to. If @from has SKBFLSHAREDFRAG set, the resulting @to skb can contain the same externally-owned or page-cache-backe...

CVE-2026-46000

A flaw was found in the Linux kernel's rxrpc component. Security operations that decrypt RESPONSE packets in place may share the socket buffer skbuff with a packet sniffer. This could allow a local attacker or an attacker with network access to intercept and view decrypted portions of these...

PT-2026-43867

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the rxrpc component regarding connection-level packet handling. Security operations that verify RESPONSE packets decrypt portions of the data in place. If the sk buff...

CVE-2026-43503

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: propagate shared-frag marker through frag-transfer helpers Two frag-transfer helpers pskbcopyfclone and skbshift fail to propagate the SKBFLSHAREDFRAG bit in skbshinfo-flags when moving frags from source to...

EUVD-2026-31536

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: propagate shared-frag marker through frag-transfer helpers Two frag-transfer helpers pskbcopyfclone and skbshift fail to propagate the SKBFLSHAREDFRAG bit in skbshinfo-flags when moving frags from source to...

CVE-2026-43503

The CVE-2026-43503 entry concerns Linux kernel net/skbuff handling: when frags are moved by frag-transfer helpers (notably __pskb_copy_fclone() and skb_shift()), the SKBFL_SHARED_FRAG flag was not propagated to the destination skb, causing destination pages to remain shared while skb_has_shared_f...

PT-2026-42878

Name of the Vulnerable Software and Affected Versions Linux Kernel versions 7.1-rc1 through 7.1-rc4 Description A local privilege escalation issue exists in the networking stack skbuff due to the improper propagation of the SKBFL SHARED FRAG flag during fragment transfers. Several functions and...

SUSE-SU-2026:21774-1 Security update for the Linux Kernel RT (Live Patch 2 for SUSE Linux Enterprise 16)

This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.7.1 fixes one security issue The following security issue was fixed: - CVE-2026-43284: xfrm: esp: avoid in-place decrypt on shared skb frags bsc1264459...

SUSE-SU-2026:1959-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP7 RT kernel was updated to fix various security issues The following security issues were fixed: - CVE-2025-54518: x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache bsc1264013. - CVE-2026-46300: net: skbuff: propagate shared-frag marker...

SUSE-SU-2026:21806-1 Security update for the Linux Kernel (Live Patch 3 for SUSE Linux Enterprise 16)

This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.8.1 fixes one security issue The following security issue was fixed: - CVE-2026-43284: xfrm: esp: avoid in-place decrypt on shared skb frags bsc1264459...

SUSE-SU-2026:1904-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 12 SP5 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2025-54518: x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache bsc1264013. - CVE-2026-46300: net: skbuff: propagate shared-frag marker...

SUSE-SU-2026:21708-1 Security update for the Linux Kernel RT (Live Patch 7 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-30.1 fixes one security issue The following security issue was fixed: - CVE-2026-43284: xfrm: esp: avoid in-place decrypt on shared skb frags bsc1264459...

TencentOS Server 3: kernel (TSSA-2026:0316)

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:0316 advisory. Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:...

AZL-86366 CVE-2026-43500 affecting package kernel for versions less than 6.6.141.1-1

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Also unshare DATA/RESPONSE packets when paged frags are present The DATA-packet handler in rxrpcinputcallevent and the RESPONSE handler in rxrpcverifyresponse copy the skb to a linear one before calling into the security o...

CVE-2026-43500

A flaw was found in the Linux kernel's RxRPC networking subsystem. When a socket buffer carrying a page-cache reference reaches the RxRPC authentication verification path, the kernel performs an in-place decryption directly on the referenced page without first isolating the buffer. A low-privileg...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-017397)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017397 advisory. In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: avoid in-place decrypt on shared skb frags MSGSPLICEPAGES can attach pages from a pipe...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-017398)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017398 advisory. In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: avoid in-place decrypt on shared skb frags MSGSPLICEPAGES can attach pages from a pipe...